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机构地区:[1]中国科学院遥感应用研究所,北京100101 [2]中国科学院对地观测与数字地球科学中心,北京100190
出 处:《安徽农业科学》2009年第12期5591-5595,共5页Journal of Anhui Agricultural Sciences
基 金:国家科技支撑计划"空间信息技术在大遗址保护中的应用研究"(2006BAK30B01)
摘 要:利用多时相LANDSATTM数据对山东省汶上县南旺湖地区1987-2001年的土地利用变化状况进行了遥感动态监测。首先对不同时相数据进行几何纠正和辐射归一化,根据研究区两时相的地物类别选择训练区,在此基础上进行基于平行管道分类器的监督分类及分类精度评估。通过比较两时相的分类结果,发现南旺湖地区在1987—2001年间土地利用类型发生了一些显著的变化,主要表现在湖泊/沼泽等湿地资源的锐减,并在此基础上初步分析了引起这一变化的原因。The study conducted a remote sensing monitoring of the land use change of the Nanwang Lake region by using two scenes of land sat TM images acquired during 1987 - 2001. First, the geometric correction and the relative radiometric correction were performed, according to the land use types in study area, the training sites were selected. The parallelepiped classifier was then selected as the supervised classification method and the classification was performed, then the classification accuracy assessment was conducted. Comparing with the classification results of two phases of the land sat TM images, it was easy to find great changes of the land use had taken place during 1987 - 2001, and the major change was the sharp decrease of the lake/ swamp resources. Finally, the cause to these changes was analyzed.
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